Safety valve with high sealing performance

Abstract

The utility model discloses a safety valve with high sealing performance, which comprises a shell internally provided with a spring, the top end of the shell is connected with an adjusting rod, the bottom end of the shell is fixedly provided with a connecting valve, the side part of the shell is connected with a discharge pipe, the head part of the discharge pipe is provided with a discharge hole, a dust cover is arranged outside the discharge pipe, and a discharge plate is arranged in the discharge pipe. A movable rod detachably connected with the dustproof cover is arranged on the side, away from the shell, of the discharging plate, the movable rod is sleeved with a compression spring, a filtering assembly is arranged outside the discharging pipe, and the filtering assembly comprises a filtering layer for shielding the discharging hole. Compared with the prior art, by arranging the filtering assembly, the dustproof cover does not need to be attached to the discharging pipe, friction between the dustproof cover and the discharging pipe is avoided, the dustproof performance of the dustproof cover cannot be affected even after long-time use, the dustproof performance is effectively improved, and by arranging the connecting cylinder and the movable rod, the filtering layer is convenient to replace, and the practicability is high. The use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of safety valves, in particular to a safety valve with high sealing performance. Background Art

[0002] The existing patent (Announcement No.: CN219827848U) discloses a high-sealing safety valve. The utility model is provided with a discharge sealing plate, a discharge spring seat, a movable rod, a second compression spring and a dust cover. When the pressure in the shell exceeds the specified value, the dust cover opens the discharge port under the drive of the spring, and the discharge pipe is discharged. After the discharge is completed, the discharge port is closed by the dust cover again, thereby achieving a dust-proof effect. However, in actual application, since the dust cover fits the discharge pipe, friction will occur between the dust cover and the discharge pipe when the dust cover moves. After long-term use, there will be serious wear between the discharge pipe and the dust cover, resulting in a gap between the two, affecting the dust-proof effect, and the discharge hole alone cannot prevent dust from entering. For this reason, we propose a safety valve with high sealing performance. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a safety valve with high sealing performance.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A safety valve with high sealing performance is designed, including a shell with a spring inside, an adjusting rod connected to the top of the shell, a connecting valve fixed to the bottom, a discharge pipe connected to the side of the shell, a discharge hole is provided at the head of the discharge pipe, a dust cover is provided outside the discharge pipe, a discharge plate is installed in the discharge pipe, a movable rod detachably connected to the dust cover is provided on the side of the discharge plate away from the shell, a compression spring is sleeved on the movable rod, a filter assembly is provided outside the discharge pipe, and the filter assembly includes a filter layer that blocks the discharge hole.

[0006] In the above solution, a connecting tube is fixed to the inner wall of the dust cover, and the connecting tube is threadedly connected to the end of the movable rod.

[0007] In the above solution, the movable rod is a magnetic metal movable rod, and a locking assembly is provided between the movable rod and the dust cover, and the locking assembly includes a magnetic suction block connected to the end of the movable rod.

[0008] In the above scheme, screw hole one and screw hole two are respectively provided at both ends of the connecting tube, and a movable groove connected to each other is provided between screw hole one and screw hole two, the magnetic block is placed in the movable groove, and a screw rod with one end fixed to the magnetic block is connected to the screw hole two, and the screw rod is threadedly connected to the dust cover.

[0009] In the above scheme, a mounting ring is sleeved on the discharge pipe, a plurality of limiting rods parallel to the axial direction of the discharge pipe are fixed on the mounting ring, and the inner wall of the filter layer abuts against the limiting rods.

[0010] In the above solution, a limit cover is provided at one end of the discharge pipe away from the shell, and a pressure rod located on the outer wall of the filter layer is fixed inside the limit cover.

[0011] In the above solution, the filter layer is a paper filter layer.

[0012] The advantages and beneficial effects of the utility model are as follows: by arranging a filter assembly between the dust cover and the discharge pipe, and utilizing the filter layer as a transition structure, the discharge hole on the discharge pipe is isolated from the outside world, so that the outside air is first filtered by the filter layer before entering the discharge hole, and dust and other impurities in the air are filtered out. Compared with the prior art, the dust cover does not need to be fitted with the discharge pipe, thereby avoiding friction between the dust cover and the discharge pipe, and the dustproof performance of the dust cover is not affected even after long-term use, and the dustproof performance is effectively improved. By arranging a connecting tube and a movable rod, when the filtering performance of the filter layer decreases, the dust cover can be separated from the discharge pipe by disassembling the connecting tube and the movable rod, thereby facilitating the replacement of the filter layer and being easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 This is a schematic diagram of the structure of a safety valve with high sealing performance proposed by the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of a dust cover of a safety valve with high sealing performance proposed by the utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of a discharge pipe of a safety valve with high sealing performance proposed by the utility model;

[0017] Figure 4 The utility model provides a schematic diagram of the internal structure of the connection of a safety valve with high sealing performance.

[0018] In the figure: shell 1, connecting valve 2, adjusting rod 3, discharge pipe 4, dust cover 5, discharge hole 6, discharge plate 7, movable rod 8, compression spring 9, connecting tube 10, screw hole 11, movable groove 12, magnetic block 13, screw hole 2 14, screw 15, mounting ring 16, limit rod 17, filter layer 18, limit cover 19, pressure rod 20. DETAILED DESCRIPTION

[0019] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0020] See also Figure 1-4 The utility model provides a technical solution: a safety valve with high sealing performance, including a shell 1 with a spring inside, an adjusting rod 3 connected to the top of the shell 1, the bottom end of the adjusting rod 3 is fixed to the spring through a spring seat, and the other end of the spring is also installed with a spring seat, a sealing plate fixed to the lower spring seat is slidably provided at the bottom end of the shell, a connecting valve 2 is fixed to the bottom end of the shell 1, a discharge pipe 4 is connected to the side of the shell 1, a discharge hole 6 is provided at the head of the discharge pipe 4, the discharge hole 6 is located at the end of the discharge pipe 4 away from the shell 1, and the discharge hole 6 is located at the discharge pipe 4. The upper part is arranged in a ring shape, a dust cover 5 is sleeved outside the discharge pipe 4, a discharge plate 7 is installed in the discharge pipe 4, a movable rod 8 detachably connected to the dust cover 5 is arranged on the side of the discharge plate 7 away from the housing 1, a compression spring 9 is sleeved on the movable rod 8, one end of the compression spring 9 close to the discharge plate 7 is fixed to the end of the movable rod 8 through a spring seat, and the other end of the compression spring 9 is fixedly connected to the end of the discharge pipe 4, and a filter assembly is arranged outside the discharge pipe 4, and the filter assembly includes a filter layer 18 that blocks the discharge hole 6 to prevent external air from directly entering the discharge hole 6;

[0021] Furthermore, a mounting ring 16 is fixedly sleeved on the discharge pipe 4, and a plurality of limit rods 17 parallel to the axial direction of the discharge pipe 4 are fixed on the mounting ring 16, and the inner wall of the filter layer 18 abuts against the limit rods 17, that is, the filter layer 18 is sleeved on the cylindrical surface formed by the plurality of limit rods 17;

[0022] Furthermore, a limit cover 19 is provided at one end of the discharge pipe 4 away from the shell 1, and the end of the limit cover 19 away from the discharge pipe 4 abuts against the end of the connecting tube 10 described below to prevent the limit cover 19 from being separated from the discharge pipe 4. A pressure rod 20 located on the outer wall of the filter layer 18 is fixed inside the limit cover 19 to further limit the filter layer 18 to prevent the filter layer 18 from exposing the discharge hole 6.

[0023] Specifically, by setting a filter assembly between the dust cover 5 and the discharge pipe 4, using the filter layer 18 as a transition structure, the discharge hole 6 on the discharge pipe 4 is isolated from the outside world, so that the outside air is first filtered by the filter layer 18 before entering the discharge hole 6, and impurities such as dust in the air are filtered out. Compared with the prior art, the dust cover 5 does not need to be in contact with the discharge pipe 4, thereby avoiding friction between the dust cover 5 and the discharge pipe 4. Even after long-term use, the dust-proof performance of the dust cover 5 will not be affected, and the dust-proof performance is effectively improved.

[0024] Furthermore, a connecting tube 10 is fixed to the inner wall of the dust cover 5, and the connecting tube 10 is threadedly connected to the end of the movable rod 8, so as to disassemble the dust cover 5 and then replace the filter layer 18 conveniently;

[0025] Specifically, by providing the connecting tube 10 and the movable rod 8, when the filtering performance of the filtering layer 18 decreases, the dust cover 5 can be separated from the discharge pipe 4 by disassembling the connecting tube 10 and the movable rod 8, thereby facilitating the replacement of the filtering layer 18, which is easy to use.

[0026] Furthermore, the movable rod 8 is a magnetic metal movable rod, and a locking assembly is provided between the movable rod 8 and the dust cover 5. The locking assembly includes a magnetic block 13 connected to the end of the movable rod 8. The surface of the magnetic block 13 is coated with a magnetic coating. The end of the movable rod 8 is tightly adsorbed to the magnetic block 13 by using the magnetic adsorption force, so as to avoid loosening between the movable rod 8 and the connecting tube 10, and effectively improve the tightness of the connection between the movable rod 8 and the dust cover 5.

[0027] Further, a screw hole 11 and a screw hole 14 are respectively provided at both ends of the connecting tube 10, the screw hole 11 is used to connect the movable rod 8, a movable groove 12 is provided between the screw hole 11 and the screw hole 14, and the magnetic block 13 is placed in the movable groove 12, and the radius of the movable groove 12 is between the radius of the screw hole 11 and the screw hole 14, and a screw rod 15 with one end fixed to the magnetic block 13 is connected to the screw hole 14, and the screw rod 15 is threadedly connected to the dust cover 5, and the end of the screw rod 15 away from the magnetic block 13 passes through the dust cover 5, and a rotary handle is fixed to the end;

[0028] Furthermore, the filter layer 18 is a paper filter layer; the filter layer 18 is formed by stacking filter papers, which improves the filtering effect.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A safety valve with high sealing performance, comprising a housing (1) with a spring therein, characterized in that: The top of the shell (1) is connected to an adjusting rod (3), the bottom of which is fixedly provided with a connecting valve (2), the side of the shell (1) is connected to a discharge pipe (4), the head of the discharge pipe (4) is provided with a discharge hole (6), a dust cover (5) is provided outside the discharge pipe (4), a discharge plate (7) is installed inside the discharge pipe (4), a movable rod (8) detachably connected to the dust cover (5) is provided on the side of the discharge plate (7) away from the shell (1), a compression spring (9) is sleeved on the movable rod (8), a filter assembly is provided outside the discharge pipe (4), and the filter assembly includes a filter layer (18) that blocks the discharge hole (6).

2. A safety valve with high sealing performance according to claim 1, characterized in that: A connecting tube (10) is fixed to the inner wall of the dust cover (5), and the connecting tube (10) is threadedly connected to the end of the movable rod (8).

3. A safety valve with high sealing performance according to claim 2, characterized in that: The movable rod (8) is a magnetic metal movable rod. A locking assembly is provided between the movable rod (8) and the dust cover (5). The locking assembly comprises a magnetic attraction block (13) connected to the end of the movable rod (8).

4. A safety valve with high sealing performance according to claim 3, characterized in that: The two ends of the connecting tube (10) are respectively provided with a screw hole 1 (11) and a screw hole 2 (14); a movable groove (12) which is in communication with each other is provided between the screw hole 1 (11) and the screw hole 2 (14); the magnetic attraction block (13) is placed in the movable groove (12); the screw hole 2 (14) is connected with a screw rod (15) having one end fixed to the magnetic attraction block (13); the screw rod (15) is threadedly connected to the dust cover (5).

5. A safety valve with high sealing performance according to claim 1, characterized in that: The discharge pipe (4) is sleeved with a mounting ring (16), a plurality of limit rods (17) parallel to the axial direction of the discharge pipe (4) are fixed on the mounting ring (16), and the inner wall of the filter layer (18) abuts against the limit rods (17).

6. A safety valve with high sealing performance according to claim 1, characterized in that: The end cover of the discharge pipe (4) away from the shell (1) is provided with a limit cover (19), and a pressure rod (20) located on the outer wall of the filter layer (18) is fixed inside the limit cover (19).

7. A safety valve with high sealing performance according to claim 1, characterized in that: The filter layer (18) is a paper filter layer.

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